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冲蚀磨损是造成火炮驻退机节制环失效的主要原因。为提高节制环的耐磨能力和可靠性,借助材料表面强化技术,采用微弧沉积和激光熔覆两种涂层工艺,分别制备镍基合金和铜基合金耐磨涂层,并对涂层的组织形貌、涂层质量、显微硬度等进行测试分析。在制备的四种耐磨涂层中,微弧沉积铜基合金涂层和激光熔覆镍基合金涂层的性能较好。为进一步检验涂层耐磨性能,将节制环改进件安装到驻退机上,利用反后坐装置试验台开展后坐冲击试验。根据节制环改进件的磨损形貌和冲蚀磨损量得出,激光熔覆镍基合金涂层的耐磨能力最佳,可以作为提高火炮驻退机节制环耐磨能力的有效手段。
Erosion wear is the main reason for the failure of artillery control loop. In order to improve the wearability and reliability of the control ring, two kinds of coating processes, micro-arc deposition and laser cladding, were used to prepare Ni-based alloy and Cu-based wear-resistant coating respectively. Tissue morphology, coating quality, microhardness and other test analysis. Among the four wear-resistant coatings prepared, micro-arc deposition of copper-based alloy coating and laser cladding of nickel-based alloy coating performance better. To further test the wear resistance of the coating, the control ring retrofit was installed on the retreating machine and recoil test was carried out using the anti-recoil device test bench. According to the wear morphology and erosion loss of the improved ring, the wear resistance of the laser cladding Ni-based alloy coating is the best, which can be used as an effective way to improve the wear-resisting ability of the control loop of the artillery recoil machine.